Noise and vibration-attenuating hanger

ABSTRACT

A noise and vibration-attenuating hanger which includes a resilient element intermediate upper and lower rigid plates, an overhead hanger engaging the lower plate and extending upwardly adjacent two opposite sidewalls of the resilient element and a depending hanger engaging the upper plate and extending downwardly adjacent two other opposite sidewalls of the resilient element, the said sidewalls of the resilient element tending to bulge outwardly under compression to push adjacent portions of the hangers outwardly and prevent the overhead hanger from engaging an edge of the lower plate and the depending hanger from engaging an edge of the upper plate which engagement would bridge the resilient element and nullify the effect thereof.

United States Patent 72] Inventor Jack Harris Forest Hills, N.Y. [21]Appl. No. 57,546

July 23, 1970 Sept. 14, 1971 Korfund Dynamics Corporation Westbury, N.Y.

[22] Filed [45 Patented [73 Assignee [54] NOISE ANDVlBRATlON-ATTENUATING HANGER 33 GD, 33 o, 33 GA, 33 015 [56] ReferencesCited UNITED STATES PATENTS 2,610,695 9/1952 Grue 18l/33(.14)

VII/ZIIIIIIMIII 'IIIIIZIIIIA 2,882,989 4/1959 Brueletal.

ABSTRACT: A noise and vibration-attenuating hanger which includes aresilient element intermediate upper and lower rigid plates, an overheadhanger engaging the lower plate and extending upwardly adjacent twoopposite sidewalls of the resilient element and a depending hangerengaging the upper plate and extending downwardly adjacent two otheropposite sidewalls of the resilient element, the said sidewalls of theresilient element tending to bulge outwardly under compression to pushadjacent portions of the hangers outwardly and prevent the overheadhanger from engaging an edge of the lower plate and the depending hangerfrom engaging an edge of the upper plate which engagement would bridgethe resilient element and nullify the effect thereof.

PATENTEUSEPMIQH 3504.531

I NVEN'I' JACK HA/"Pf? A TTORNEYS.

.NOISE AND VIBRATlON-ATTENUATING HANGER This invention relates to anovel noise and vibration-attenuating hanger.

In one conventional vibration-attenuating hanger heretofore proposed,thehanger included a resilient element sandwichedbetweenrigid plates,aligned holes throughthe plates and the resilient element, an upstandinghanger engaging the lower plate and extending upwardly through the'holesand a depending hanger engaging the upper plate and extending downwardlythrough the'holes. These prior art hangers are 7 generally satisfactory,but the central hole through the resilient element reduces theload towhich such hangers of a given size can be subjected and requires alarger resilient element than would otherwise be'necessary.

In the noise and vibration-attenuating hanger of the present invention,an upstanding hanger extends upwardly adjacent a pair of oppositesidewalls of a resilient element interposed between upper and lowerrigid plates and a depending hanger extends downwardly adjacent anotherpair of opposite sidewalls of the resilient element. In the preferredembodi- =ment of the invention, the hangers are V-shaped and the bulgeoutwardly when the resilient element is placed under compression. Thistendency of the sidewalls to bulge urges that adjacentportions of thehangers outwardly so thatthe upstanding hanger is urged away fromtheedges of theupper rigid plate and the depending hanger is urged awayfrom the edges of the lower plate. Such engagement would cause thehangersto bridge the plates and nullify "the effect of the resilientelement.

Another feature of the present inventioiiis that the hangersfrictionally engage. the sidewalls of the resilient material so that thehanger. elementswill not become accidentally disassembled.

For a morecomplete understanding of the present invention, referencecanbezmade to the detailed description which 'followsand totheaccompanying drawing in which:

FIG. 1 is an.exploded prospective view of the resilient ele ment and therigid .plates which engage the upper and lower surfaces thereof;

F l0. 2 is a front elevation of the hanger;

FIG. 3 is a cross-sectional view taken'along the line 3-3 of F IG. 2looking in the direction of the arrows;

FIG. 4 is a perspective view of an alternative form of the :hanger; and

FIG. Sis a cross-sectional view taken along the line 5-5 of FIG. 4looking in the direction of the arrows.

Referring to the drawing, the vibration-attenuating hanger includes aresilient element interposed between upper and lower rigid plates 11 and12, respectively, an upstanding hanger l3 engaging. the lower plate12.and extending upwardly and a depending hanger l4 engaging the upperplate 11 and extending downwardly. The hanger can be used, for example,for hanging heavy objects from a ceiling.

The resilient element 10 is preferably a solid block of an-.elastomeric. material capable of attenuating vibration and (noise.Neoprene is a suitable material which not only has these properties, butin addition has 'long aging properties, resistance to chemicals and oiland stability over a wide temperaturerange.

Thehangers are preferably. steel wires which are zinc plated .orgalvanized to resist wear and corrosion and bent generally in theshapeof a V. The upstanding ends 13a of the hanger l3 engage alignedholes 15 and 16 in the bottom plate 12 and in the bottom of theresilientelement 10. The hanger 13 extends outwardly below and in engagement withthe bottom plate 12 and then upwardly adjacent the sidewalls 22 of theresilient element in the form of an inverted V. Similarly, the ends ofthe depending hanger 14 engage aligned holes 17 and 18in the upper plate11 and in the upper surface of the resilient element 10. The hangerextends outwardly across'the top of the upper plate 11 and thendownwardly adjacent different sidewalls 19 of the resilient element inthe form of a V.

The pair of opposite sidewalls 19 slope downwardly and inwardly from theupper surface 20 to the lower surface 21 of the resilient element toconform to the shape of the hanger 14. The other pair of oppositesidewalls 22 slope downwardly and outwardly from the upper surface 20 tothe lower surface 21 to conform to the shape of the upstanding hanger13. The upper and lower surfaces 20 and 21, respectively, of theresilient block are rectangular in shape with their longer dimensionsoriented at right angles to each other.

The hangers frictionally engage the sidewalls of the resilient elementso that they will not become accidentally'disassembled from theresilient element while they are in storage or in shipment.

In the alternative embodiment of the hanger illustrated in FIGS. 4 and5, the resilient element 10 contains slots 23 in the upper andlowersurfaces to receive the ends of the hangers, and the upper and lowerrigidplates l1 and 12, respectively, have aligned slots 24 therein.Also, the sidewalls of the resilient element contain grooves 25 toreceive the adjacent portions of the hangers therein.

The smaller dimensions of the upper and lower rigid'plates 11 and 12,respectively, are slightly less than the corresponding dimensions of thesurfaces of the resilient element which they engage, so that theupstanding hanger 13 will not engage the upper plate 11 andthe dependinghanger 14 will not engage the lower plate 12. Obviously, if eitherhanger were to bridge both plates, the hanger would nullify the-effectof the resilient element. Such bridging should not occur in the hangerbecause as the load increases the-compressingeffect on the resilientelement will tend to bulge the sidewalls thereof and urge the adjacentportions of the hangers outwardly away from the edges of the plates.

The invention has been shown in preferred forms and by way of exampleonly, and obviously various modificationsmay be made therein withoutdeparting from the spirit of the invention. The invention, therefore,should not be limited'to any specified form or embodiment'except insofaras such limitations are expressly set forth in the claims.

I claim:

1. A noise and vibration-attenuating hanger comprising a resilientelement having upper and lower surfaces and atleast two pairs ofoppositely disposed side surfaces, rigid plates in engagement with theupper and lower surfaces, an overhead hanger engaging the lower plateand extending upwardly adjacent two of the oppositely disposed sidesurfaces and a'depending hanger engaging the upper plate and extendingdownwardly adjacent two other oppositely disposed side surfaces, thesaid side surfaces of the resilient element tending to bulge undercompression to push adjacent portions of the hangers outwardly andprevent the overhead hanger from engaging the upper plate and thedepending hanger from engaging the lower plate.

2. A noise and vibration attenuating hanger as set forth in claim 1 inwhich the hangers are V-shaped and in which one pair of the sidesurfaces of the resilient element slope downwardly and outwardly fromsaid upper surface to said lower surface and the other pair slopedownwardly and inwardly from the upper surface to the lower surface.

3. A noise and vibration-attenuating hanger as set forth in claim 2 inwhich the upper and lower'surfaces are substantially parallel andrectangular in shape with the longer dimensions thereof oriented atright angles to each other.

4. A noise and vibration-attenuating hanger'as set forth in claim 3 inwhich the shorter dimensions of the plates are less than the shorterdimensions of the surfaces which they engage means forming openings inthe lower plate and in the lower surface of the resilient element toreceive-the upstanding ends of the upstanding hanger.

6. A noise and vibration-attenuating hanger as set forth in claim 5including grooves in the side surfaces of the resilient element toreceive and position the adjacent portions of the hanger.

1. A noise and vibration-attenuating hanger comprising a resilientelement having upper and lower surfaces and at least two pairs ofoppositely disposed side surfaces, rigid plates in engagement with theupper and lower surfaces, an overhead hanger engaging the lower pLateand extending upwardly adjacent two of the oppositely disposed sidesurfaces and a depending hanger engaging the upper plate and extendingdownwardly adjacent two other oppositely disposed side surfaces, thesaid side surfaces of the resilient element tending to bulge undercompression to push adjacent portions of the hangers outwardly andprevent the overhead hanger from engaging the upper plate and thedepending hanger from engaging the lower plate.
 2. A noise and vibrationattenuating hanger as set forth in claim 1 in which the hangers areV-shaped and in which one pair of the side surfaces of the resilientelement slope downwardly and outwardly from said upper surface to saidlower surface and the other pair slope downwardly and inwardly from theupper surface to the lower surface.
 3. A noise and vibration-attenuatinghanger as set forth in claim 2 in which the upper and lower surfaces aresubstantially parallel and rectangular in shape with the longerdimensions thereof oriented at right angles to each other.
 4. A noiseand vibration-attenuating hanger as set forth in claim 3 in which theshorter dimensions of the plates are less than the shorter dimensions ofthe surfaces which they engage to separate the upstanding hanger fromthe edges of the upper plate and the depending hanger from the edges ofthe lower plate.
 5. A noise and vibration-attenuating hanger as setforth in claim 1 in which the upstanding hanger has a pair of upwardlyextending ends and the depending hanger has a pair of depending ends andincluding means forming openings in the upper plate and the uppersurface of the resilient element to receive the depending ends from thedepending hanger and means forming openings in the lower plate and inthe lower surface of the resilient element to receive the upstandingends of the upstanding hanger.
 6. A noise and vibration-attenuatinghanger as set forth in claim 5 including grooves in the side surfaces ofthe resilient element to receive and position the adjacent portions ofthe hanger.